8200128378395 has 4 divisors (see below), whose sum is σ = 9840154054080. Its totient is φ = 6560102702712.

The previous prime is 8200128378389. The next prime is 8200128378437. The reversal of 8200128378395 is 5938738210028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8200128378395 - 2⁸ = 8200128378139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8200128378395.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820012837835 + ... + 820012837844.

It is an arithmetic number, because the mean of its divisors is an integer number (2460038513520).

Almost surely, 2^{8200128378395} is an apocalyptic number.

8200128378395 is a deficient number, since it is larger than the sum of its proper divisors (1640025675685).

8200128378395 is a wasteful number, since it uses less digits than its factorization.

8200128378395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640025675684.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 8200128378395 in words is "eight trillion, two hundred billion, one hundred twenty-eight million, three hundred seventy-eight thousand, three hundred ninety-five".